+/** Parse pattern item parameter type. */
+static int
+parse_vc_spec(struct context *ctx, const struct token *token,
+ const char *str, unsigned int len,
+ void *buf, unsigned int size)
+{
+ struct buffer *out = buf;
+ struct rte_flow_item *item;
+ uint32_t data_size;
+ int index;
+ int objmask = 0;
+
+ (void)size;
+ /* Token name must match. */
+ if (parse_default(ctx, token, str, len, NULL, 0) < 0)
+ return -1;
+ /* Parse parameter types. */
+ switch (ctx->curr) {
+ case ITEM_PARAM_IS:
+ index = 0;
+ objmask = 1;
+ break;
+ case ITEM_PARAM_SPEC:
+ index = 0;
+ break;
+ case ITEM_PARAM_LAST:
+ index = 1;
+ break;
+ case ITEM_PARAM_MASK:
+ index = 2;
+ break;
+ default:
+ return -1;
+ }
+ /* Nothing else to do if there is no buffer. */
+ if (!out)
+ return len;
+ if (!out->args.vc.pattern_n)
+ return -1;
+ item = &out->args.vc.pattern[out->args.vc.pattern_n - 1];
+ data_size = ctx->objdata / 3; /* spec, last, mask */
+ /* Point to selected object. */
+ ctx->object = out->args.vc.data + (data_size * index);
+ if (objmask) {
+ ctx->objmask = out->args.vc.data + (data_size * 2); /* mask */
+ item->mask = ctx->objmask;
+ } else
+ ctx->objmask = NULL;
+ /* Update relevant item pointer. */
+ *((const void **[]){ &item->spec, &item->last, &item->mask })[index] =
+ ctx->object;
+ return len;
+}
+